Pcv valve?? Can someone tell me what this part is called. Please and thank you

[analty]

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[Schurkey]

WHAT VEHICLE? Engine appears to be either a Small-Block (305, 350) or a 4.3L V6.

I don't see anything like that mentioned when searching for "PCV" or "Crankcase Ventilation" in my '97 C/K service manual, in Book 1 OR Book 2.

Appears to be a secondary vacuum/flow regulator, that varies flow based on a vacuum connection that's been blocked-off on your truck.

That can't be good...

 

[Pinger]

Not a part as such - just the part of the inlet manifold that the PCV system vents into.
On my Suburban, where you have a pipe blocked with a bolt, I have a small bore pipe leading to a HVAC control valve.

 

[Schurkey]

Yeah, there's another thread
www.gmt400.com/threads/what-hose-is-this-98-chevy-silverado-5-7-v8.52322/

What hose is this? 98 Chevy Silverado 5.7 V8

Specifically the hard small plastic hose with the elbow

www.gmt400.com

where he posted the same question. The wisdom there is that this is not a C/K part, it's only on the SUVs with a heater control valve.

I gotta say, I would not have expected the PCV system to be tied into the HVAC system...but I've been wrong before.

 

[Pinger]

Yeah, there's another thread
www.gmt400.com/threads/what-hose-is-this-98-chevy-silverado-5-7-v8.52322/

What hose is this? 98 Chevy Silverado 5.7 V8

Specifically the hard small plastic hose with the elbow

www.gmt400.com

where he posted the same question. The wisdom there is that this is not a C/K part, it's only on the SUVs with a heater control valve.

I can't quite tell if it is a 'part' or just part of the manifold. If the former then presumably removable.

I gotta say, I would not have expected the PCV system to be tied into the HVAC system...but I've been wrong before.

Merely sharing a source of vacuum - a conduit to the inlet manifold.

 

[JDGMC]

Yeah, there's another thread
www.gmt400.com/threads/what-hose-is-this-98-chevy-silverado-5-7-v8.52322/

What hose is this? 98 Chevy Silverado 5.7 V8

Specifically the hard small plastic hose with the elbow

www.gmt400.com

where he posted the same question. The wisdom there is that this is not a C/K part, it's only on the SUVs with a heater control valve.

I gotta say, I would not have expected the PCV system to be tied into the HVAC system...but I've been wrong before.

GM Part description: Cover, PCV VLV(INCL SEAL)

GM PN 12556521 (2 port), AC Manual CTRL RPO C60, various models/eng 1996-2007

GM PN 12552752 (1 port), EXC AC Manual CNRL RPO C60, various models/eng 1996-2007

 

[Caman96]

Positive Crankcase Ventilation (PCV) Valve Cover GM 12552752 | eBay

OEM PVC GM vent. Please help if you know what cars it is for. Part number: 12552752 Please use the part number and pictures I have provided to make sure this will fit your vehicle before you make a purchase.

www.ebay.com

 

[analty]

Positive Crankcase Ventilation (PCV) Valve Cover GM 12552752 | eBay

OEM PVC GM vent. Please help if you know what cars it is for. Part number: 12552752 Please use the part number and pictures I have provided to make sure this will fit your vehicle before you make a purchase.

www.ebay.com

Thank you much appreciated

 

[Caman96]

Thank you much appreciated

Glad to help.